鋼波紋涵(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)施(shi)工(gong)時為(wei)什么選(xuan)(xuan)用(yong)分段施(shi)工(gong)的辦(ban)法？鋼波紋涵(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)施(shi)工(gong)時，選(xuan)(xuan)用(yong)分段施(shi)工(gong)的辦(ban)法，預先在原(yuan)拱涵(han)(han)基底(di)用(yong)角鋼并排兩根(gen)，長(chang)(chang)度依據(ju)(ju)涵(han)(han)長(chang)(chang)確定。鋼波紋管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)徑(jing)依據(ju)(ju)工(gong)程需要(yao)可(ke)有不同(tong)的規格，整裝管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)徑(jing)為(wei)0.5m--2.5m;每節管(guan)(guan)(guan)(guan)(guan)(guan)長(chang)(chang)度3米左(zuo)右(you)。選(xuan)(xuan)用(yong)內(外)法蘭螺栓銜接。組裝涵(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)徑(jing)為(wei)3m--8m。

鋼波紋涵管有(you)圓(yuan)形(xing)(xing)、鴨子蛋圓(yuan)形(xing)(xing)、半圓(yuan)形(xing)(xing)等，出(chu)進口也可(ke)按照邊坡(po)份額做成斜(xie)口，加(jia)工(gong)波紋管(guan)(guan)管(guan)(guan)徑(jing)范圍Φ0.5m～Φ8m，管(guan)(guan)壁厚度為3mm～7mm，能夠滿意填土0.5m～40m厚的(de)需求。鋼(gang)制鋼(gang)波紋管(guan)(guan)具有(you)工(gong)期短、重(zhong)量(liang)輕、裝置便捷、經久(jiu)性好、工(gong)程造價低、抗(kang)變型有(you)經歷強、減損通車后維護本錢等的(de)地方，從資(zi)料與結(jie)構和(he)功能的(de)實質(zhi)關系上剖析。

認(ren)為適宜而運用柔性、高超度的(de)鋼制鋼波紋管(guan)洞，不(bu)止具(ju)有(you)(you)適合地基(ji)與根底(di)變型的(de)有(you)(you)經歷，能夠處理因地基(ji)根底(di)翹棱均沉(chen)降(jiang)造成的(de)涵洞毀傷標(biao)(biao)題(ti)，而且鋼制鋼波紋管(guan)洞由(you)于軸向(xiang)波紋的(de)存在使其具(ju)有(you)(you)突出的(de)受(shou)力特點標(biao)(biao)志，軸向(xiang)和徑(jing)向(xiang)一起散(san)布(bu)因荷載(zai)引動的(de)應(ying)力應(ying)變，能夠更(geng)大程度上散(san)布(bu)荷載(zai)的(de)應(ying)力會集，更(geng)好地發揮鋼結(jie)構(gou)的(de)上風。

鋼波紋管

特別在高寒凍(dong)土(tu)、軟土(tu)、脹大土(tu)、濕(shi)陷性黃土(tu)等(deng)區(qu)域，具有表(biao)面化的(de)經濟(ji)效(xiao)益。涵洞施工(gong)(gong)前，準備(bei)相(xiang)關資料、人(ren)員及設備(bei)出場，并作好施工(gong)(gong)時期的(de)安全(quan)防護(hu)作業，對路(lu)基邊坡進行圍網防護(hu)，避免石塊(kuai)等(deng)物體下(xia)滑(hua)傷人(ren)。根(gen)底處理，可(ke)回填沙礫或砌筑片石砼(tong)。

對基底(di)進(jin)行平坦(tan)，換(huan)填(tian)30-50cm厚的沙(sha)礫資料，密(mi)實(shi)度到達90%以上，挑選恰當的流水(shui)縱坡(po)3%左右。如(ru)果涵洞(dong)長大(da)于30米，鋼波紋管(guan)兩邊與(yu)原涵洞(dong)寬度小于80cm，可(ke)將(jiang)3m-6m長涵管(guan)在下(xia)流或上游向(xiang)一端(duan)推進(jin)，就位以后，能夠將(jiang)其固(gu)定，砌(qi)筑(zhu)頂端(duan)的片(pian)(pian)石端(duan)墻，鋼波紋管(guan)的另一端(duan)與(yu)涵洞(dong)間的距離用沙(sha)袋或漿砌(qi)片(pian)(pian)石擋住，寬度50cm，然后開端(duan)回填(tian)。